We propose a marginal standardisation to unit exponential Exp\((1)\)  margins using a probability integral transform using the marginal model (REF ). The exponential scale has been found to be most ideal for studying extremal dependence [1]}, [2]}. We define \(X^{E}(s,t)\)  to be the relative wind speed on Exp\((1)\)  margins in cell \(s\)  and time \(t\) , such that for all cells and all times we have that
\( X^{E}(s,t) = -\log \lbrace 1-F_s (X(s,t))\rbrace , \) 
